Exact Many-Electron Ground States on the Diamond Hubbard Chain

2007/03/30 by Zsolt Gulácsi, Zsolt Gulacsi, A. P. Kampf +3 · 4 citations
Materials Science · Physics and Astronomy · #Electronic and Structural Properties of Oxides #Physics of Superconductivity and Magnetism #Quantum and electron transport phenomena #cond-mat.str-el

paper · pdf · doi:10.1103/physrevlett.99.026404

published as Phys. Rev. Lett. 99, 026404 (2007). · 4 pages, 2 figures

arxiv created 2007/03/30 · openalex publication_date 2007/07/13 · arxiv updated 2009/12/01 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28

Abstract

Exact ground states of interacting electrons on the diamond Hubbard chain in a magnetic field are constructed which exhibit a wide range of properties such as flat-band ferromagnetism and correlation-induced metallic, half-metallic, or insulating behavior. The properties of these ground states can be tuned by changing the magnetic flux, local potentials, or electron density.

Citations

• Exact Insulating and Conducting Ground States of a Periodic Anderson Model in Three Dimensions

Cited by

• THE SAWTOOTH CHAIN: FROM HEISENBERG SPINS TO HUBBARD ELECTRONS
• Conductance through geometrically frustrated itinerant electronic systems
• Interaction-created effective flat bands in conducting polymers
• Interplay of disorder and interactions in a flat-band supporting diamond chain